Allowing light, but not detailed shapes, to pass through; semitransparent.

Not able to be seen through; not transparent.

the throwing back by a body or surface of light, heat, or sound without absorbing it.

is the change in direction of a wave, caused by the change in the wave's speed

broadcast or send out (an electrical signal or a radio or television program).

take in or soak up

the range of all types of electro magnetic radiation

a glass or other transparent object in prism form, especially one that is triangular with refracting surfaces at an acute angle with each other and that separates white light into a spectrum of colors.

a substance through which a vibration travels

the number of waves that pass a fixed point in unit time

mass of a unit volume of a material substance

a vibration that propagates as an acoustic wave, through a transmission medium such as a gas, liquid or solid

electromagnetic radiation of any wavelength, whether visible or not

a sound that is repeated because the sound waves are reflected back.

the space that a substance (solid, liquid, gas, or plasma) or shape occupies or contains

the distance that a wave dips down or rises higher than its calm or flat surface

the rate at which vibrations are produced or how high or low the sound is.

a unit for measuring the loudness of sounds.

The correct order of the colors of the rainbow are: